GJournal (hopefully) final patches.

[Kip Macy]

> > -fno-strict-aliasing does not solve anything, it just prevents the
> > compiler from telling you about bugs in your code.
>
> Which must be the reason that it is used when building the kernel on AMD64.
> ;-)

Actually, whenever the kernel is compiled with -O2. "Type punning" is
sufficiently uncommon in the kernel proper that it is correctable there.
However, it is pervasive throughout the device drivers.

                -Kip